PubReader vs SpacerMint
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PubReader
This app allows you to live preview interactive publications created with its companion desktop software. You can also distribute your XPUB publications for free to friends, customers, or colleagues without needing app store accounts.
- Live preview of publications
- Distribute XPUB content for free
- Supports EPUB and native app formats
- No developer/app store accounts needed
- Share via email or file sharing services
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PubReader is PubCoder’s free companion mobile app: use PubCoder on your computer to create stunning interactive publications and export them in a variety of standard formats, including EPUB and native app, or in PubCoder's open XPUB format. You can use PubReader to: - Live Preview PubCoder projects: send your work to any smartphone or tablet using PubReader on the same Wi-Fi network with a click - Distribute your contents for free: export your XPUB publication from PubCoder and share it with your friends, customers or collegues via e-mail or using your favorite online file sharing service. No developer, app store or book store accounts, no submissions, no hassle. For more informations, visit pubcoder.com
SpacerMint
This app helps you reclaim storage space on your iPhone by identifying and cleaning up duplicate, similar, and large files. It offers smart detection for photos, screenshots, videos, and messaging media, with all processing done on your device for privacy.
- Smart duplicate photo detection
- Similar photo finder
- Screenshot cleanup
- Large file identification
- Video compression
- Messaging media cleanup
- Storage insights and forecasting
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SpacerMint helps you reclaim storage on your iPhone — privately, safely, and on your terms. Every scan runs entirely on your device. No cloud uploads, no accounts, no data leaves your phone. SpacerMint uses Apple Vision and smart metadata matching to surface what’s worth cleaning up, then puts you in full control of every decision. SMART DUPLICATE DETECTION Find exact and near-identical photos using AI-powered visual comparison combined with file size, GPS proximity, and timestamp matching. SIMILAR PHOTO FINDER Surface near-identical shots so you can keep the best and consolidate the rest. SCREENSHOT CLEANUP Identify old and stale screenshots cluttering your library. Review each one before deciding what stays and what goes. LARGE FILE FINDER Surface storage-hogging files so you can make informed decisions about what to keep. VIDEO COMPRESSION Reclaim space from large videos with adjustable quality tiers — slight, medium, or heavy compression. Originals are replaced in place. MESSAGING MEDIA CLEANUP Find media bloat from WhatsApp, Telegram, iMessage, and other messaging apps. STORAGE INSIGHTS Visual analytics showing storage trends over time, reclaimable estimates, and scan history. STORAGE FORECASTING Predict when your device will run low on space based on your usage patterns. SAFE BY DEFAULT Every cleanup action requires your explicit confirmation. Deleted items go to Recently Deleted for 30 days. SpacerMint never auto-deletes anything. FREE TIER Full scanning across all categories, unlimited cleanup for screenshots, recordings, downloads, and more. Capped categories show clear limits before you clean. SPACERMINT PREMIUM Unlimited duplicate, similar photo, and large file cleanup. Plus video compression and live photo conversion. Privacy Policy: https://spacermint.com/privacy Support: https://spacermint.com/support
Screenshots
Verdict
The clearest difference is rating: SpacerMint at 5.0 against PubReader's 2.8. SpacerMint also leads on review sentiment (100% vs 67%) and update cadence (every 5 days vs every 2 months). PubReader's advantage is in-app purchases (none vs 2). On price, ratings volume, ads and device support 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. SpacerMint sells 2 in-app purchases, starting at $1.99 per month. PubReader asks for nothing beyond the download.
SpacerMint holds the better App Store score, 5.0 against 2.8. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews point the same way: 67% of PubReader's written reviews are positive against 100% of SpacerMint's.
PubReader ships an update every 2 months, SpacerMint every 5 days. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.
| Parameter | PubReader | SpacerMint |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (4 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | 3 |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 67 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | PubCoder | Eugene Ohu |
Customer experience
PubReader
SpacerMint
In-app purchases
PubReader
No in-app purchases
SpacerMint
- Premium Monthly$1.991 Month
- Premium Yearly$14.991 Year
