# SendProof vs DuoMode

The clearest difference is in-app purchases: DuoMode at none against SendProof's 3. DuoMode also leads on update cadence (weekly vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SendProof sells 3 in-app purchases, starting at $2.99 per month. DuoMode asks for nothing beyond the download.

SendProof ships an update every 5 months, DuoMode weekly. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | SendProof | DuoMode |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sendproof-accountability/id6760977881/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Freemium | — |
| Size | 33 MB | 95 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 12+ |
| Developer | [Idanite LLC](https://appshunter.io/developer/1785910235) | [Caue Santos](https://appshunter.io/developer/6799765418) |

## What reviewers say

### SendProof

[App page](https://appshunter.io/ios/app/sendproof-accountability/id6760977881)

This app provides real accountability for habit tracking by requiring users to submit photo proof of their completed habits to a friend. It ensures that streaks are earned through actual evidence, not just self-reporting, fostering genuine progress.

**Highlights:** Photo proof for habits, Accountability partner review, Build honest streaks, Two-way coaching, Fast habit tracking, Goal and habit building

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SendProof Plus Monthly | $2.99 | per month |
| SendProof Plus Yearly | $24.99 | per year |
| Freeze Pack | $0.99 | one-time |


### DuoMode

[App page](https://appshunter.io/ios/app/duomode/id6799765416)

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

**In-app purchases:** none


## Frequently asked questions

### Is SendProof free?

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

### Is DuoMode free?

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

### Do SendProof or DuoMode have ads?

Neither SendProof nor DuoMode shows ads.

### Which is updated more often, SendProof or DuoMode?

SendProof ships an update every 5 months, and DuoMode weekly. Most recently, SendProof was updated on October 1, 2026 and DuoMode on October 3, 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.*