# GymNext Flex Timer vs CHALK IT PRO

The clearest difference is rating: GymNext Flex Timer at 4.8 against CHALK IT PRO's 4.1. GymNext Flex Timer also leads on ratings volume (2.1K vs 54) and review sentiment (72% vs 63%). CHALK IT PRO's advantage is in-app purchases (none vs 2) and update cadence (every 6 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. GymNext Flex Timer sells 2 in-app purchases, starting at $8.99 per month. CHALK IT PRO asks for nothing beyond the download.

GymNext Flex Timer holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: GymNext Flex Timer has 2.1K ratings behind it against 54, so its average is the more settled of the two. Written reviews point the same way: 72% of GymNext Flex Timer's written reviews are positive against 63% of CHALK IT PRO's.

GymNext Flex Timer ships an update every 3 weeks, CHALK IT PRO every 6 days. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | GymNext Flex Timer | CHALK IT PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (2.1K ratings)](https://appshunter.io/ios/app/gymnext-flex-timer/id977329344/reviews)** | [4.1 (54 ratings)](https://appshunter.io/ios/app/chalk-it-pro/id1481219410/reviews) |
| Number of ratings | **2.1K** | 54 |
| Positive reviews | **71.7% of reviews** | 63.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | **Free** | Subscription |
| Size | 185 MB | 32 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Homick Enterprises](https://appshunter.io/developer/346326303) | [Green Monster Studios](https://appshunter.io/developer/403051289) |

## What reviewers say

### GymNext Flex Timer

[App page](https://appshunter.io/ios/app/gymnext-flex-timer/id977329344)

This app offers advanced interval training timing with customizable modes and the ability to control an external LED display. It integrates with wearables and heart rate monitors for a comprehensive workout experience.

**Highlights:** Control external LED displays, Multiple customizable timer modes (Tabata, EMOM, etc.), Save and recall favorite workouts, Apple Watch control, Audio sync with music, Heart rate monitor integration, Control multiple LED displays

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flex Timer Pro Monthly | $8.99 | per month |
| Flex Timer Pro Yearly | $79.99 | per year |

**What reviewers like**

- 🚀 Versatile and customizable
- 👍 User-friendly interface
- 🔔 Reliable and consistent
- 💪 Excellent for interval training
- 🔊 Clear audio cues

**What reviewers complain about**

- 🐛 Audio cues sometimes stop working
- 🔊 Lack of volume control
- 🔍 Detailed instructions needed for beginners
- ⏱️ Delayed countdown between phone and timer

**Reported bugs**

- Saved timers not consistently loading
- Segmented timers not saving properly

**Requested features**

- Watch app integration for remote control
- Background audio playback when app is closed
- Customizable voice options
- Lap timer functionality


### CHALK IT PRO

[App page](https://appshunter.io/ios/app/chalk-it-pro/id1481219410)

This app allows gym owners, personal trainers, and athletes to create and track personalized workouts. It supports multi-level programming, private revenue-generating tracks, and community engagement features.

**Highlights:** Multi-level workout programming, Private revenue-generating tracks, Workout database, Community engagement features, Athlete progress tracking, Remote programming import

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

**In-app purchases:** none


## Frequently asked questions

### Is GymNext Flex Timer free?

GymNext Flex Timer is free to download, with in-app purchases available.

### Is CHALK IT PRO free?

CHALK IT PRO is free to download, with no in-app purchases.

### Which has better reviews, GymNext Flex Timer or CHALK IT PRO?

GymNext Flex Timer is rated higher. GymNext Flex Timer averages 4.8 out of 5 from 2.1K ratings, while CHALK IT PRO averages 4.1 from 54 ratings.

### Do GymNext Flex Timer or CHALK IT PRO have ads?

Neither GymNext Flex Timer nor CHALK IT PRO shows ads.

### Which is updated more often, GymNext Flex Timer or CHALK IT PRO?

GymNext Flex Timer ships an update every 3 weeks, and CHALK IT PRO every 6 days. Most recently, GymNext Flex Timer was updated on October 15, 2026 and CHALK IT PRO on October 14, 2026.

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