Comparison

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.

Head to head
About

Cabri Express Primary

Features
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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.

About

Le p'tit observatoire

Features
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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

Cabri Express Primary4 screens
Le p'tit observatoire4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

ScorecardNo meaningful differences
Cabri Express Primary versus Le p'tit observatoire: the parameters behind the verdict, then further details
ParameterCabri Express PrimaryLe p'tit observatoire
PriceFreeFree
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS14.013.0 — better
Further details — not scored
Size101 MB67 MB
Age rating12+4+
DeveloperCabrilog SASLe p'tit observatoire

In-app purchases

None

Cabri Express Primary

No in-app purchases

None

Le p'tit observatoire

No in-app purchases

Questions

Is Cabri Express Primary free?
Cabri Express Primary is free to download, with no in-app purchases.
Is Le p'tit observatoire free?
Le p'tit observatoire is free to download, with no in-app purchases.
Do Cabri Express Primary or Le p'tit observatoire have ads?
Neither Cabri Express Primary nor Le p'tit observatoire shows ads.
Which is updated more often, Cabri Express Primary or Le p'tit observatoire?
Cabri Express Primary ships an update every 2 months, and Le p'tit observatoire every 4 months. Most recently, Cabri Express Primary was updated on November 7, 2026 and Le p'tit observatoire on November 3, 2026.

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