Interstellar vs RedSum
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Interstellar
Access and interact with communities across Mbin, Lemmy, and PieFed. This open-source client provides a unified platform for engaging with your favorite fediverse content.
- Access Mbin, Lemmy, and PieFed accounts
- Interact with fediverse communities
- Open-source platform
- Bug reporting via GitHub
- Feature requests via magazine
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Interstellar is a free and open source, fediverse client, allowing you to access your Mbin/Lemmy/PieFed accounts and interact with your favorite communities. If you encounter any bugs or would like to request a feature, please report it on the GitHub repository (github.com/interstellar-app/interstellar) or the Interstellar magazine (kbin.earth/m/interstellar).
RedSum
A Reddit client that leverages the free Reddit API to provide a streamlined browsing experience. It includes a unique feature for summarizing content, making it easier to digest information quickly.
- Reddit API integration
- Content summarization
- Free to use
- Supports iPhone and iPad
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Reddit client which uses the free Reddit api and supports summarization of the content.
Screenshots
Verdict
The clearest difference is iOS requirement: Interstellar at 13.0 against RedSum's 26.0. On price, review sentiment, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 months. Both last shipped on November 5, 2026.
| Parameter | Interstellar | RedSum |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 5 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 79 MB | 79 MB |
| Age rating | 17+ | 4+ |
| Developer | John Randall | Joao Valente |
Customer experience
Interstellar
RedSum
In-app purchases
Interstellar
No in-app purchases
RedSum
No in-app purchases
