Comparison

Sponge Audiobooks vs Tempo

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

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.

Highlights
  • 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
Features
Read full description

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

Tempo4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Tempo sells 1 one-off in-app purchase. Sponge Audiobooks asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Sponge Audiobooks ships an update monthly, Tempo every 10 days. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 6 level
Sponge Audiobooks versus Tempo: the parameters behind the verdict, then further details
ParameterSponge AudiobooksTempo
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyMonthlyEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS13.0 — better16.0
Further details — not scored
Size8 MB60 MB
Age rating4+4+
DeveloperExpeditionary LogicJosh Hoffman

In-app purchases

None

Sponge Audiobooks

No in-app purchases

1 purchases

Tempo

One-time1
  • Unlimited Reading2 variants$7.99

Questions

Is Sponge Audiobooks free?
Sponge Audiobooks is free to download, with no in-app purchases.
Is Tempo free?
Tempo is free to download, with in-app purchases available.
Which has better reviews, Sponge Audiobooks or Tempo?
Sponge Audiobooks and Tempo are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Sponge Audiobooks or Tempo have ads?
Neither Sponge Audiobooks nor Tempo shows ads.
Which is updated more often, Sponge Audiobooks or Tempo?
Sponge Audiobooks ships an update monthly, and Tempo every 10 days. Most recently, Sponge Audiobooks was updated on October 13, 2026 and Tempo on October 14, 2026.

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