Cabri Express Primary vs Le p'tit observatoire
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cabri Express Primary
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Features of Cabri Express Primary include a super easy primary calculator, geometry instruments, 2D & 3D shapes plus a dynamic geometry environment. App wrapped in an intuitive app that kids love to use. The primary version distinguishes itself from the secondary version in the look and in the calculator: the division is arithmetic (per default) and decimal numbers, fractions, roots and trigonometric functions are not made extra visible. These adjustments are the results of reviews with math education experts and with ministries of education. With its friendly interface, Cabri Express allows students to visualize and manipulate abstract mathematical concepts. The app is a laboratory in which they explore, model, and investigate without any limits. Cabri is free, it is the reference software for dynamic mathematics. It has been used for more than 25 years by millions of teachers and students around the world. Good maths for students and power & ease for teachers, to teach math not the software.
Le p'tit observatoire
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L'outil qui parle vraiment des élèves. Je capture Le chemin d'un élève passe par mille détails. Capturez rapidement ce que vous observez de manière ordonnée, seul et en équipe. Libérez-vous l'esprit ! Je rédige RDV parents, GEVASCO, bulletins… transformez vos observations en appréciations factuelles, personnalisées et facilement exportables. Je partage Construisez une vue 360° de chaque enfant, toujours disponible d'une classe à l'autre et d'une année à l'autre. J'agis Demandez des conseils à votre nouvel assistant de poche : transformez vos observations en pistes pédagogiques personnalisées, et pilotez votre plan d'action. Plus de temps. Plus de mémoire. Un meilleur suivi. Des données sécurisées Notre outil répond aux conformités RGPD. Vos données ne seront pas exploitées. Elles sont protégées et stockées en France. "Observe tes élèves et prends tout en note. C'est cela qui te permettra de trouver la clef qui ouvrira un chemin à chacun."
Screenshots
Verdict
Cabri Express Primary and Le p'tit observatoire are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
Cabri Express Primary ships an update every 2 months, Le p'tit observatoire every 4 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.
| Parameter | Cabri Express Primary | Le p'tit observatoire |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 101 MB | 67 MB |
| Age rating | 12+ | 4+ |
| Developer | Cabrilog SAS | Le p'tit observatoire |
In-app purchases
Cabri Express Primary
No in-app purchases
Le p'tit observatoire
No in-app purchases
Questions
Is Cabri Express Primary free?
Is Le p'tit observatoire free?
Do Cabri Express Primary or Le p'tit observatoire have ads?
Which is updated more often, Cabri Express Primary or Le p'tit observatoire?
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