Apps that keep your data where it belongs

11 iOS apps across finance, education, health, fitness, travel, and weather. No ads. No tracking. Built by Blue Flame Games.

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11 apps
6 categories
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49 articles

Available Now

On the App Store. Download today.

Kanesh financial data terminal
Finance

Kanesh

Source-linked financial data terminal. Every number traces back to its SEC filing. On-device AI. 53 countries.

Cognithix 11+ exam preparation
Education

Cognithix

The only 11+ app covering all four tested areas — including the Language Aptitude Test. Adaptive difficulty. Unlimited questions.

Arithmetix maths practice
Education

Arithmetix

UK National Curriculum maths from Reception to Year 6. Adaptive difficulty. Spaced repetition. Virtual pet motivation.

Sparks Studios creative app for kids
Kids

Sparks Studios

AI-powered creative playground. Kids draw, write stories, and compose music — all on-device. No ads. No tracking. Ages 4-12.

PhotoFlight travel map from photos
Travel

PhotoFlight

Travel map from your photo library. Reads GPS metadata from your existing photos. Automatic. On-device.

Cyla private cycle tracker
Health

Cyla

Private period and cycle tracker. Entirely on-device with Apple Watch temperature integration. No accounts, no cloud, no servers.

Cloudmesh Weather app with widgets and AI forecasts
Weather

Cloudmesh Weather

29 weather widgets, AI summaries, and a privacy-first community mesh network. No subscription.

PaceGrid fitness tracker with GPS and training load analytics
Fitness

PaceGrid

Minua

GPS run, ride, and hike tracking with Injury Guard training load monitoring. One-time purchase. Fully on-device.

Minua earn screen time through learning
Kids

Minua

Earn screen time through learning. On-device parental controls. No accounts, no cloud, no tracking.

Coming Soon

In development. Launching on the App Store soon.

Travel

PingNear

Discover what to do right now, right here. Context-aware travel discovery.

Why BFG?

Your device, your data

Most BFG apps process everything on-device. We can't see your data even if we wanted to.

Fair pricing

No hidden fees. No upsells. Free tiers that work. Paid tiers that are worth it.

No ads, no tracking

We make money from the product, not from selling your attention or your data.

Start With What You Need

These are the questions people usually ask before they discover a BFG app.

Education

For parents comparing 11+ prep, times tables, and UK primary maths apps.

Finance

For people searching for a Bloomberg alternative or a better way to verify financial numbers on iPhone.

Health & Privacy

For people who want private tracking tools without accounts, cloud storage, or ad-tech baggage.

Travel & Parenting

For people looking for private travel utilities or safer, more thoughtful screen time tools for families.

  • PhotoFlight for a travel map from photos and a Polarsteps alternative.
  • PingNear for what to do near me and context-aware travel discovery.
  • Minua for earned screen time and privacy-first parental controls.

Blog

Guides, tips, and insights across everything we build

Frequently Asked Questions

What is the best app for 11+ exam preparation?

Cognithix is the only 11+ app that covers all four tested areas in one place — English, Verbal Reasoning, Non-Verbal Reasoning, and the Language Aptitude Test — across 42 question types. The LAT section includes real Latin vocabulary and grammar (nominative and accusative cases), constructed languages, and pattern-based language exercises that other apps simply don't offer. Questions are generated on-device so your child never runs out, difficulty adapts in real time, and the parent dashboard flags specific struggle patterns like rushed guessing or declining accuracy so you know exactly where to help.

What is a good Bloomberg Terminal alternative for mobile?

Kanesh gives you what Bloomberg charges £20,000 a year for — financial data across 53 countries with an AI you can ask questions in plain English. The difference is every single number links back to its original source: tap any figure and you see the SEC filing, FRED series, or data provider it came from. You get income statements, balance sheets, cash flow, technical indicators, a Congress stock trading tracker, an interactive 3D globe with real-time conflict zones and natural disasters, bond yield anomaly detection, and macro indicators like yield curves and recession signals. The AI runs entirely on your device — your queries never leave your phone.

What is the best maths app for primary school children in the UK?

Arithmetix covers 48 topics across the full UK National Curriculum from EYFS to Year 6 — including dedicated Year 4 times tables practice for the Multiplication Tables Check. It has five challenge modes with Game Center leaderboards, spaced repetition that brings back weak topics at the right intervals, and a virtual pet your child actually has to look after (feed, wash, cure when sick) — which keeps them coming back without nagging. The parent dashboard detects struggle patterns automatically and tells you which topics need attention, not just scores. Supports colour-blind modes and three languages.

What is a safe creative app for kids with no ads?

Sparks Studios lets children draw, write stories, and compose music — all powered by on-device AI that assists without taking over. Stories are built collaboratively: the child and AI take turns, with vocabulary and complexity matched to their age group (4–6, 7–9, or 10–12). Finished stories can be turned into illustrated storybooks with the child's own drawings and soundtracks attached. The drawing canvas supports Apple Pencil pressure sensitivity with four brush types, and the music composer uses drag-and-drop loops across multiple genres. Nothing is uploaded anywhere. Parental controls include session time limits and a maths-gate that children can't bypass.

How does PhotoFlight track your travels?

PhotoFlight scans the GPS metadata already in your photo library and builds a complete travel passport — countries, cities, flights, airlines, distance traveled, and how you compare to other travellers worldwide. It detects trips automatically, estimates flights from GPS jumps between your photos, and groups everything into a timeline with stats like your longest trip, farthest destination, and first visit to each country. You get 10 achievements, a photo heatmap, and shareable passport cards for social media. No new tracking needed — it works with the photos you already have, entirely on-device.

Do BFG apps use subscriptions?

BFG uses the pricing model that fits each app. Apps with mostly on-device features typically use a one-time unlock, while apps with ongoing cloud or AI costs may use subscriptions instead. Kanesh Pro and Sparks Studios Premium use subscriptions, while Arithmetix, Cognithix, PhotoFlight, Cyla, Cloudmesh Weather, and PaceGrid use one-time unlocks. Across all of them, the constant is no ads and no data monetisation.

Are BFG apps actually private, or is that just marketing?

It's architectural, not policy. Most BFG apps make zero network requests — they literally cannot send your data anywhere because they don't connect to the internet. The AI in Kanesh, Sparks Studios, and Cognithix runs on-device using models stored on your phone. There are no accounts to create, no analytics SDKs, no ad frameworks, and no third-party trackers in any BFG app. Your data is encrypted by iOS and never leaves your device.

What is the best screen time app for kids that rewards learning?

Minua lets children earn fun app access by spending time in learning apps chosen by their parent. Parents set a configurable ratio and a daily time window when fun apps can be unlocked. Built on Apple's own parental controls framework, everything stays on-device with no accounts, no cloud, and no tracking. PIN-protected settings prevent children from changing the rules. One-time purchase, no subscription.

What is the most private period tracker app?

Cyla tracks your cycle entirely on-device with no accounts, no cloud, and no servers. It integrates with Apple Watch wrist temperature data for improved cycle predictions. Your health data is encrypted by iOS and never transmitted anywhere. Supports symptom tracking, mood logging, flow intensity, and cycle pattern analysis. One-time purchase, no subscription.

What is a good running app without a subscription?

PaceGrid is a one-time purchase GPS running, cycling, and hiking tracker with Injury Guard training load monitoring to help prevent overtraining injuries. It supports Apple Watch, stores all data on-device, and integrates with Apple Health. No monthly fees, no cloud accounts, no location data sent to servers.

What is the best weather app with widgets and no subscription?

Cloudmesh Weather offers 29 customisable widgets, AI weather summaries, and a privacy-first community mesh network for hyperlocal conditions. One-time purchase with no subscription. Data stays on your device — no analytics, no ad frameworks, no tracking.