Guernsey Library vs LotlLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Guernsey Library
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Make the most of Guernsey’s Guille-Allès Library. Renew your loans, search the collection, place reservations, and find your next great read. PLUS, use your device to borrow items while you're in the Library.
LotlLog
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The only iOS app built specifically for axolotl keepers — not a general reptile tracker, and not an AI subscription. Axolotls can regrow a lost limb, tail, or gill completely, with no scar. LotlLog is built around documenting that story, alongside the routine water and health tracking every axolotl actually needs. 【What You Can Do】 ▷ Water Quality Log Record temperature, pH, ammonia, nitrite, nitrate, GH, KH, and TDS. Tap a color swatch to log most readings in seconds instead of typing numbers, and see an instant ideal-range status for each one. Chart trends over time with period filters, and log water changes separately. ▷ Gill Health Check Log gill color, fullness, left/right symmetry, and bite marks, with a photo. Slide between any two checks to compare them side by side and catch changes early. ▷ Regeneration Timeline Log the body part, injury date, and cause, then add photos as recovery progresses. Scrub through a day-by-day photo timeline from injury to fully healed, and mark a case complete when it's done. ▷ Growth Tracking Record length and weight over time with photos, and see the trend on a chart. ▷ Feeding & Skin Logs Track food type and refusals, plus skin condition notes and photos. ▷ Individual Profiles Log morph, source, purchase price, initial water temperature, and status for each axolotl. Free for up to 2 individuals. ▷ Collection Stats See your morph breakdown, total investment, and regeneration case history at a glance. ▷ Share Cards Turn a new axolotl, a gill check, or a regeneration story into a shareable card for Reddit, TikTok, or Instagram. ▷ ZIP Backup & Restore Export every individual, every log, and photos as a ZIP file (CSV data inside). Restore from the same ZIP on another device — free, no restrictions. Great for backups and manual device migration. 【Your Data Stays on Your Device】 Everything is stored locally on your iPhone. No account, no cloud sync, no ads. 【Pricing】 · Free: up to 2 individuals, with every log type, chart, ZIP backup & restore, and share card fully available. · LotlLog Pro (one-time purchase): unlimited individuals, plus share cards without the app watermark and with your own social handle instead. Pay once, yours forever. ---------------------- Developer: Kore Apps Contact: support@kore-apps.com ----------------------
Screenshots
Verdict
The clearest difference is in-app purchases: Guernsey Library at none against LotlLog's 1. LotlLog's advantage is update cadence (every 3 days vs every 2 months). On price, ads, device support and iOS requirement 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. LotlLog sells 1 one-off in-app purchase. Guernsey Library asks for nothing beyond the download.
Guernsey Library ships an update every 2 months, LotlLog every 3 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.
| Parameter | Guernsey Library | LotlLog |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 199 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Guernsey Library | kazuki korenori |
In-app purchases
Guernsey Library
No in-app purchases
LotlLog
- LotlLog Pro$6.99
Questions
Is Guernsey Library free?
Is LotlLog free?
Do Guernsey Library or LotlLog have ads?
Which is updated more often, Guernsey Library or LotlLog?
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