# Plank vs EmailToFuture Time Capsules

The clearest difference is rating: EmailToFuture Time Capsules at 5.0 against Plank's 3.0. Plank's advantage is iOS requirement (13.0 vs 16.4). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

EmailToFuture Time Capsules holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

Plank ships an update every 10 days, EmailToFuture Time Capsules fortnightly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Plank | EmailToFuture Time Capsules |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/plank-core-and-challenge/id6462861500/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/emailtofuture-time-capsules/id6800032556/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Fortnightly |
| Monetization | Free | Free |
| Size | 22 MB | 64 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Zain Ali](https://appshunter.io/developer/1169007782) | [mondov, s. r. o.](https://appshunter.io/developer/6782591916) |

## What reviewers say

### Plank

[App page](https://appshunter.io/ios/app/plank-core-and-challenge/id6462861500)

This app guides users through effective plank exercises and challenges to build core strength and improve posture. It offers customizable plans, audio guidance, and progress tracking to help users achieve their fitness goals.

**Highlights:** Effective plank workouts, Challenging fitness routines, Customizable workout plans, Variety of plank styles, Audio guidance during workouts, Detailed progress tracking, Integrated workout calendar

**Features:** macOS Compatibility

**In-app purchases:** none


### EmailToFuture Time Capsules

[App page](https://appshunter.io/ios/app/emailtofuture-time-capsules/id6800032556)

Schedule emails to yourself or others to be delivered years into the future. Create digital time capsules with attachments, track their delivery, and revisit past messages when the time is right.

**Highlights:** Schedule emails up to 10 years ahead, Create digital time capsules, Attach images, videos, audio, and documents, Send to multiple recipients, Track pending and delivered messages, Cross-device account sync

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

**In-app purchases:** none


## Frequently asked questions

### Is Plank free?

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

### Is EmailToFuture Time Capsules free?

EmailToFuture Time Capsules is free to download, with no in-app purchases.

### Which has better reviews, Plank or EmailToFuture Time Capsules?

EmailToFuture Time Capsules is rated higher. Plank averages 3.0 out of 5 from 4 ratings, while EmailToFuture Time Capsules averages 5.0 from 2 ratings.

### Do Plank or EmailToFuture Time Capsules have ads?

Neither Plank nor EmailToFuture Time Capsules shows ads.

### Which is updated more often, Plank or EmailToFuture Time Capsules?

Plank ships an update every 10 days, and EmailToFuture Time Capsules fortnightly. Most recently, Plank was updated on October 24, 2026 and EmailToFuture Time Capsules on October 25, 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.*