Helix vs Chronly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Helix
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Helix est un planificateur de révisions basé sur la méthode des J, entièrement gratuit et en accès libre. Que vous soyez en PASS, en LAS, en prépa ou dans n'importe quelle autre filière, Helix s'adapte à votre organisation et vous aide à ne plus jamais oublier de revoir un chapitre au bon moment. Ce que vous pouvez faire avec Helix : Créer vos matières et vos chapitres personnalisés Planifier automatiquement vos révisions sur les jours J1, J3, J7, J15, J30… et plus Consulter chaque matin la liste exacte des J à faire dans la journée Cocher vos révisions au fur et à mesure Ajouter des notes et des types de révision sur chaque J Enregistrer vos séquences de J favorites pour gagner du temps Pourquoi Helix ? La méthode des J est l'une des techniques de mémorisation à long terme les plus utilisées en médecine. Helix vous donne enfin un outil pensé pour elle, sans abonnement, sans pub, sans friction. Helix Education Apprenez plus efficacement, retenez durablement et excellez lors du concours.
Chronly
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Need a timeline for a school project, a history report, a family story or a project plan? Chronly turns your dated events into a clean, printable timeline poster — no design app, no template hunting. Give your timeline a title, add events with a date, an optional emoji and a color, and tap Make Poster. Chronly sorts everything by date and lays it out along a horizontal axis. • SORTED BY DATE — add events in any order; they're placed on the timeline chronologically. • CLEAN LAYOUT — a horizontal axis with labels alternating above and below the line, each showing the event title and its date. • EMOJI AND COLOR — give each event an emoji and one of 8 marker colors so milestones stand out. • PRINTABLE PDF — a landscape US Letter poster, ready to print from your iPhone or save to Files. • SHAREABLE PNG — the same poster as an image, for slides, messages or class portals. Honest scope: up to 40 events per timeline. Events are spaced evenly in date order, not to scale by time. Busy timelines stay readable: labels step onto staggered rows and shrink slightly so they never overlap. Long titles are shortened to fit, and dates print in your own date style. Everything is made on your iPhone. Nothing is uploaded, and no account is needed. Try it free — 3 posters. A one-time $4.99 purchase unlocks unlimited posters. No subscription, no ads. Questions: overlapmarr@gmail.com
Screenshots
Verdict
The clearest difference is in-app purchases: Helix at none against Chronly's 1. Helix also leads on device support (3 vs 1). Chronly's advantage is update cadence (every 4 days vs fortnightly). On price, ads 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. Chronly sells 1 one-off in-app purchase. Helix asks for nothing beyond the download.
Helix ships an update fortnightly, Chronly every 4 days. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.
| Parameter | Helix | Chronly |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 30 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Valentin Bechameil | Jhomar Maravillas |
In-app purchases
Helix
No in-app purchases
Chronly
- Unlock Unlimited$4.99









