Sponge Audiobooks vs Tempo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sponge Audiobooks
Listen to audiobooks directly on your Apple Watch without needing your iPhone. Supports offline playback and connects to various audiobook sources like Librivox and Audiobookshelf. Ideal for children to enjoy stories independently.
- Play audiobooks directly on Apple Watch
- No iPhone required
- Offline playback via downloads
- Supports Librivox and Audiobookshelf
- Sync progress to Audiobookshelf
- Designed for Apple Watch For Your Kids
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Play audiobooks directly from your Apple Watch. No iPhone required. Connect to multiple different sources of audiobooks, from the great Librivox site online, or use your own self-hosted audiobooks with Audiobookshelf. And more sources are on the way! Designed particularly for Apple Watch For Your Kids (formerly "Family Setup"). Kids can listen to audiobooks instead of staring at screens. Features: - No iPhone required - Download to play books offline. Swipe to the left to download. - Auto sync progress to Audiobookshelf server (when available) - Add many audiobook sources. Press+Hold to copy a source - No need to type URL or password on your tiny watch: https://spongeaudio.com/setup-sources.html
Tempo
This app presents text one word at a time, helping you maintain focus and progress through reading material. It offers adjustable pacing, rewind capabilities, and a distraction-free reading environment. Save your content locally and track your reading habits.
- RSVP reading mode
- Adjustable reading pace (WPM)
- Pause, rewind, and review text
- Import text and supported files
- Local reading library
- Reading progress tracking
- Customizable themes and typography
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Tempo is a calm focus reader for people who want to keep moving through books, notes, articles, and study material without losing their place. The reader uses RSVP reading: it shows text one word at a time, with simple controls for pace, pause, rewind, and review. Instead of filling the screen with distractions, Tempo keeps the current word centered and gives you just enough context to continue confidently. Use Tempo to: * Paste text or import supported files * Read one word at a time in a focused RSVP view * Adjust your words-per-minute pace * Pause, rewind, and jump back into context * Save reading material in your local library * Track reading sessions, progress, stats, and streaks * Choose themes and typography that feel comfortable * Unlock unlimited local reading with a one-time purchase Tempo is built for focused reading, not fake productivity. It does not promise magic speed gains or replace careful reading. It gives you a calmer way to move through text, stay engaged, and finish more of what you start. Your reading material stays local by default in this release. Tempo is designed for content you own, created, or otherwise have the right to read.
Screenshots
Verdict
The clearest difference is in-app purchases: Sponge Audiobooks at none against Tempo's 2. Sponge Audiobooks also leads on iOS requirement (13.0 vs 16.0). Tempo's advantage is update cadence (every 10 days vs monthly). On price, rating, ratings volume 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. Tempo sells 1 one-off in-app purchase. Sponge Audiobooks asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Sponge Audiobooks against 5.0 for Tempo. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Sponge Audiobooks ships an update monthly, Tempo every 10 days. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.
| Parameter | Sponge Audiobooks | Tempo |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Monthly | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 8 MB | 60 MB |
| Age rating | 4+ | 4+ |
| Developer | Expeditionary Logic | Josh Hoffman |
In-app purchases
Sponge Audiobooks
No in-app purchases
Tempo
- Unlimited Reading2 variants$7.99









