# Autism Timer vs Target Zone Keeper

The clearest difference is price: Target Zone Keeper at Free against Autism Timer's $2.99. Target Zone Keeper also leads on rating (5.0 vs 1.0) and update cadence (every 7 months vs every 34 months). Autism Timer's advantage is iOS requirement (8.0 vs 17.6). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Target Zone Keeper is free to download; Autism Timer costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Target Zone Keeper holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Autism Timer ships an update every 34 months, Target Zone Keeper every 7 months. The most recent releases landed on October 4, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Autism Timer | Target Zone Keeper |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/autism-timer/id409539780/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/target-zone-keeper/id6673919937/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 7 months** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 2 MB |
| Requires iOS | **8.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [ROUGE41](https://appshunter.io/developer/310426702) | [Margarita Bliznikova](https://appshunter.io/developer/1765769948) |

## What reviewers say

### Autism Timer

[App page](https://appshunter.io/ios/app/autism-timer/id409539780)

A simple, full-screen timer designed for clarity and ease of use. It features distinct visual zones and customizable alerts to help manage time effectively. Ideal for individuals who benefit from visual cues and straightforward functionality.

**Highlights:** Full-screen display, Customizable green/yellow/red time zones, Beep/vibrate alerts, Start/Pause/Reset functionality, Distraction-free interface

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

**In-app purchases:** none


### Target Zone Keeper

[App page](https://appshunter.io/ios/app/target-zone-keeper/id6673919937)

This app helps improve cardiovascular fitness by guiding users to maintain their heart rate within an optimal zone for VO2 max enhancement. It offers non-disruptive alerts and visual cues, requiring minimal wrist interaction for seamless workout integration.

**Highlights:** Maintains target heart rate zone, Minimal wrist interaction required, Simple, intuitive setup, Customizable, non-disruptive alerts, Personalized heart rate zones, Apple Health integration

**In-app purchases:** none


## Frequently asked questions

### Is Autism Timer free?

Autism Timer costs $2.99, with no in-app purchases.

### Is Target Zone Keeper free?

Target Zone Keeper is free to download, with no in-app purchases.

### Which has better reviews, Autism Timer or Target Zone Keeper?

Target Zone Keeper is rated higher. Autism Timer averages 1.0 out of 5 from 1 ratings, while Target Zone Keeper averages 5.0 from 1 ratings.

### Do Autism Timer or Target Zone Keeper have ads?

Neither Autism Timer nor Target Zone Keeper shows ads.

### Which is updated more often, Autism Timer or Target Zone Keeper?

Autism Timer ships an update every 34 months, and Target Zone Keeper every 7 months. Most recently, Autism Timer was updated on October 4, 2026 and Target Zone Keeper on September 23, 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.*