# Proving Ground vs LastTimer

The clearest difference is price: Proving Ground at Free against LastTimer's $0.99. Proving Ground also leads on ratings volume (199 vs 11). LastTimer's advantage is device support (3 vs 1). On rating, review sentiment, update cadence and ads there is nothing between them.

Proving Ground is free to download; LastTimer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Proving Ground against 5.0 for LastTimer. That said, the two scores are not equally well evidenced: Proving Ground has 199 ratings behind it against 11, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Proving Ground ships an update monthly, LastTimer every 3 weeks. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Proving Ground | LastTimer |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [5.0 (199 ratings)](https://appshunter.io/ios/app/proving-ground/id1530592082/reviews) | [5.0 (11 ratings)](https://appshunter.io/ios/app/lasttimer/id1571153200/reviews) |
| Number of ratings | **199** | 11 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 38 MB | 4 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Proving Ground Limited Liability Corporation](https://appshunter.io/developer/1530592084) | [Matthew weppler](https://appshunter.io/developer/1300055906) |

## What reviewers say

### Proving Ground

[App page](https://appshunter.io/ios/app/proving-ground/id1530592082)

Book and manage your training classes at a functional fitness studio. View schedules, reserve spots in group sessions, and purchase class packages directly from your device. Focus on smart training with mobility and recovery integrated into every workout.

**Highlights:** View class schedules, Book group classes, Purchase class packages, Functional training, Mobility and recovery focus

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

**In-app purchases:** none


### LastTimer

[App page](https://appshunter.io/ios/app/lasttimer/id1571153200)

This interval timer app helps you maximize workout efficiency by guiding your training sessions. Create custom timers with prep time, exercise intervals, rest periods, and audio cues. Track progress visually with widgets and live activities.

**Highlights:** Customizable interval timers, Prep time and rest periods, Multiple exercises per cycle, Up to 10 cycles per workout, Audio cues, Home screen widgets, Live Activities integration

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

**In-app purchases:** none


## Frequently asked questions

### Is Proving Ground free?

Proving Ground is free to download, with no in-app purchases.

### Is LastTimer free?

LastTimer costs $0.99, with no in-app purchases.

### Which has better reviews, Proving Ground or LastTimer?

Proving Ground and LastTimer are both rated 5.0 out of 5 on the App Store, from 199 and 11 ratings respectively.

### Do Proving Ground or LastTimer have ads?

Neither Proving Ground nor LastTimer shows ads.

### Which is updated more often, Proving Ground or LastTimer?

Proving Ground ships an update monthly, and LastTimer every 3 weeks. Most recently, Proving Ground was updated on September 22, 2026 and LastTimer 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.*