# 100 Envelope Challenge vs Plump

The clearest difference is ads: Plump at none against 100 Envelope Challenge's shown. Plump also leads on update cadence (every 9 days vs every 3 months) and iOS requirement (15.1 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. 100 Envelope Challenge sells 1 one-off in-app purchase and Plump sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

100 Envelope Challenge ships an update every 3 months, Plump every 9 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 100 Envelope Challenge | Plump |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/100-envelope-challenge/id6779838041/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 38 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ikuhei Kure](https://appshunter.io/developer/1837581334) | [ThoughtSnap Labs Ltd](https://appshunter.io/developer/1299536658) |

## What reviewers say

### 100 Envelope Challenge

[App page](https://appshunter.io/ios/app/100-envelope-challenge/id6779838041)

This app gamifies saving money by letting you track progress on various savings challenges, like the 100 Envelope Challenge. It offers visual feedback and customizable options to keep you motivated. Unlock all features with a one-time purchase.

**Highlights:** Gamified savings progress visualization, Customizable challenge rules, Multiple savings challenge types, Streak tracking and motivation tools, Home Screen widget for goal visibility, Optional daily reminders

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | one-time |


### Plump

[App page](https://appshunter.io/ios/app/plump-savings-challenge/id6786031385)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plump Monthly | $6.99 | per month |
| Plump Annual | $29.99 | per year |
| Plump Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is 100 Envelope Challenge free?

100 Envelope Challenge is free to download, with in-app purchases available.

### Is Plump free?

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

### Do 100 Envelope Challenge or Plump have ads?

100 Envelope Challenge shows ads; Plump does not.

### Which is updated more often, 100 Envelope Challenge or Plump?

100 Envelope Challenge ships an update every 3 months, and Plump every 9 days. Most recently, 100 Envelope Challenge was updated on October 25, 2026 and Plump on October 24, 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.*