# MantisApp vs Timekeeper by GRT

The clearest difference is in-app purchases: Timekeeper by GRT at none against MantisApp's 6. Timekeeper by GRT also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. MantisApp sells 6 in-app purchases, starting at $0.99 per month. Timekeeper by GRT asks for nothing beyond the download.

MantisApp ships an update every 2 months, Timekeeper by GRT every 3 weeks. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | MantisApp | Timekeeper by GRT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/mantisapp-mantis-bug-tracker/id730843063/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 29.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 117 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Lars Bergelt](https://appshunter.io/developer/294176951) | [GRT Mobile Applications and Development L.L.C-FZ](https://appshunter.io/developer/1702473730) |

## What reviewers say

### MantisApp

[App page](https://appshunter.io/ios/app/mantisapp-mantis-bug-tracker/id730843063)

Access and manage your MantisBT bug tracking system from your iPhone or iPad. View, create, edit, and comment on issues, and manage attachments. Additional features like unlimited issues and search are available via in-app purchase.

**Highlights:** Manage multiple MantisBT servers/accounts, View issue attachments, Create, edit, and comment on issues, View related issues, Unlimited issues (in-app purchase), Search issues (in-app purchase)

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MantisApp Pro – Monthly | $0.99 | per month |
| MantisApp Pro – Yearly | $4.99 | per year |
| Small Tip | $1.99 | one-time |
| Medium Tip | $3.99 | one-time |
| Large Tip | $8.99 | one-time |
| MantisApp Pro – Lifetime | $12.99 | one-time |


### Timekeeper by GRT

[App page](https://appshunter.io/ios/app/timekeeper-by-grt/id6464566011)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MantisApp free?

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

### Is Timekeeper by GRT free?

Timekeeper by GRT is free to download, with no in-app purchases.

### Do MantisApp or Timekeeper by GRT have ads?

Neither MantisApp nor Timekeeper by GRT shows ads.

### Which is updated more often, MantisApp or Timekeeper by GRT?

MantisApp ships an update every 2 months, and Timekeeper by GRT every 3 weeks. Most recently, MantisApp was updated on November 1, 2026 and Timekeeper by GRT on November 7, 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.*