Comparison

TrueFast vs FastLine

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

TrueFast

Track your intermittent fasting journey with a clean, ad-free interface. Monitor your progress, set personalized goals, and access educational content. Offers seamless integration with Apple Watch and Lock Screen widgets for easy access.

Highlights
  • Fasting timer with elapsed and remaining time
  • Saved goals for common fasting plans
  • Schedules and reminders
  • History calendar, streaks, and badges
  • Lock Screen widgets and Apple Watch support
  • Fasting phase education
  • Local-first data storage
Features
Read full description

Your time. Your pace. TrueFast is a focused intermittent fasting timer for iPhone, iPad, and Apple Watch. Start a fast, follow your goal, and keep a clear record of your routine. No ads and no separate account required. Core fasting stays free • Start, stop, and edit fasts, with elapsed and remaining time. • Save goals for common fasting plans or choose your own duration. • Keep one active recurring schedule with reminders. • Review your fasting history, streaks, and badges. • Check progress with Home Screen and Lock Screen widgets, Live Activities, and Apple Watch. • Use light or dark appearance and explore fasting phase education. • Keep your records on your device and use the core timer offline. More flexibility with TrueFast Pro Flexible week planning Move or skip one day's fast without changing your recurring routine. Save adjustments for individual dates, let reminders follow the adjusted time, and check for overlapping fasts before saving. Private routine reviews Compare saved planned and recorded start times, and summarize your Easy, Fine, and Hard reflections. Reviews show dates, sample counts, and missing data. Calculations happen on your device, helping you understand your recorded routine without treating missing days as failures. Pro also includes: • Unlimited recurring schedules. • Optional iCloud sync across devices. • Weight tracking with Apple Health. • Advanced charts and CSV export. • Custom accent colors. The new planning and review features are included for existing Pro subscribers and lifetime owners. Core fasting remains free. Pro is available by subscription or as a one-time lifetime purchase; see current options and regional prices in the app. Your routine, your records TrueFast works locally by default. If you enable Pro sync, your records use your private iCloud database. Apple Health integration is optional. In Settings, you can send feedback through an email draft you review before sending; basic app and device diagnostics are optional and off by default. TrueFast is intended for adults. Fasting may not be appropriate for children, teens, pregnant or breastfeeding people, people with a history of eating disorders, or people with certain medical conditions. Consult a qualified healthcare professional before fasting. TrueFast does not provide medical advice, diagnosis, or treatment. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy: https://gettruefast.com/privacy-policy Support: https://gettruefast.com/support

About

FastLine

Features
Read full description

FastLine is the intermittent fasting timer that does the one thing you actually open the app for — beautifully — and doesn't charge you $70 a year for a countdown. Start a fast and a clean count-up ring shows your elapsed time, your current stage, and how long until your goal. It lives where you'll actually see it: on your Lock Screen and in the Dynamic Island as a Live Activity, and on your Home Screen as a widget. No need to keep opening the app. HONEST PRICING The timer, fasting stages, history and stats are free, forever. Pro is an optional upgrade at a fair price — about twenty dollars a year, or a one-time lifetime unlock — not a $70 subscription hidden behind a countdown. WHAT YOU GET, FREE • Count-up fasting ring with time elapsed and time remaining • Popular protocols: 16:8, 18:6, 20:4 and OMAD • Live Activity on the Lock Screen + Dynamic Island • Home Screen widget • Educational fasting stages as the hours pass • History, current streak, averages and a 14-day chart PRO (OPTIONAL) • Custom fasting goals — set your own hours • Mood & energy notes on every fast • Weight trend from Apple Health • Export your history to CSV ON YOUR WRIST Glance at your fast on Apple Watch and start or end it without reaching for your phone. PRIVATE BY DEFAULT No account. No backend. Your fasts stay on your device. FastLine reads your weight from Apple Health only if you turn it on, and never writes your data anywhere. A NOTE ON HEALTH FastLine is an educational tracking tool, not medical advice. Fasting isn't right for everyone — talk to a doctor before making changes, especially if you are pregnant, nursing, taking medication, or have a history of disordered eating. Privacy Policy: https://moathothman.github.io/ExploringIdeas-legal/fastline/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

TrueFast4 screens
FastLine4 screens

Verdict

The call

The clearest difference is update cadence: TrueFast at every 6 days against FastLine's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. TrueFast sells 6 in-app purchases, starting at $2.99 per month and FastLine sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

TrueFast ships an update every 6 days, FastLine monthly. Both last shipped on October 31, 2026.

Scorecard1 real difference · 8 level
TrueFast versus FastLine: the parameters behind the verdict, then further details
ParameterTrueFastFastLine
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 6 days — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS18.017.0 — better
Further details — not scored
Size6 MB13 MB
Age rating17+4+
DeveloperEvan MattsonMoaath Othman

In-app purchases

6 purchases

TrueFast

Subscriptions2
  • TrueFast Pro Monthly$2.991 Month
  • TrueFast Pro Yearly$19.991 Year
One-time4
  • Buy Us a Coffee$1.99
  • Power the Fast$4.99
  • Super Supporter$9.99
Show 1 more
  • TrueFast Pro (Lifetime)$29.99
3 purchases

FastLine

Subscriptions2
  • Pro Monthly7 Days trial$2.991 Month
  • FastLine Pro14 Days trial$19.991 Year
One-time1
  • FastLine Pro$29.99

Questions

Is TrueFast free?
TrueFast is free to download, with in-app purchases available.
Is FastLine free?
FastLine is free to download, with in-app purchases available.
Do TrueFast or FastLine have ads?
Neither TrueFast nor FastLine shows ads.
Which is updated more often, TrueFast or FastLine?
TrueFast ships an update every 6 days, and FastLine monthly. Most recently, TrueFast was updated on October 31, 2026 and FastLine on October 31, 2026.

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