# FastCalo AI vs GymTimer

The clearest difference is update cadence: GymTimer at every 4 days against FastCalo AI's every 2 weeks. FastCalo AI's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. FastCalo AI sells 3 in-app purchases, starting at $4.99 per month and GymTimer sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

FastCalo AI ships an update every 2 weeks, GymTimer every 4 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | FastCalo AI | GymTimer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/gymtimer-hiit-interval-timer/id6792610762/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 55 MB | 85 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Pradeep Singh Rawat](https://appshunter.io/developer/1884370312) | [Crystal Interactive Entertainment LLC](https://appshunter.io/developer/6792610764) |

## What reviewers say

### FastCalo AI

[App page](https://appshunter.io/ios/app/fastcalo-ai-calorie-tracker/id6760419729)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FastCalo AI Premium – Monthly | $4.99 | per month |
| FastCalo AI Premium – 6 Months | $23.99 | per 6 months |
| FastCalo AI Premium Yearly | $35.99 | per year |


### GymTimer

[App page](https://appshunter.io/ios/app/gymtimer-hiit-interval-timer/id6792610762)

Create and follow custom interval workouts for HIIT, Tabata, and circuits. Track progress, set goals, and earn rewards. Personalize your timer and sync data across devices with an optional subscription.

**Highlights:** Customizable work/rest intervals, Full-screen clear timer display, Workout history and progress tracking, Daily workout goals and streaks, Workout favorites and reminders, Cloud sync with Crystal ID

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $19.99 | per year |


## Frequently asked questions

### Is FastCalo AI free?

FastCalo AI is free to download, with in-app purchases available.

### Is GymTimer free?

GymTimer is free to download, with in-app purchases available.

### Do FastCalo AI or GymTimer have ads?

Both FastCalo AI and GymTimer show ads.

### Which is updated more often, FastCalo AI or GymTimer?

FastCalo AI ships an update every 2 weeks, and GymTimer every 4 days. Most recently, FastCalo AI was updated on October 25, 2026 and GymTimer on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*