Quadrillages vs SDM 2019
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Quadrillages
This application helps users explore axial and central symmetry through interactive drawing on a grid. It covers Euclidean geometry concepts like points, lines, and angles, and can even be used for fraction initiation by dividing figures.
- Axial and central symmetry exercises
- Free drawing for Euclidean geometry
- Point, line, and figure drawing
- Angle and area calculations
- Fraction initiation through division
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Placing a point on a grid, drawing lines, drawing figures as proposed by this application can appear as simple and easy. This is not the case and this application that makes it possible to work on the problems of axial and central symmetry is very rich. The "Free Drawing" part full of possibilities practically covers the field of Euclidean geometry: point, line, flat geometric figures, areas, mediator, diagonal, angles etc. Everything seems feasible and the initiation to fractions is even possible which makes it possible to divide a given line or figure into equal parts.
SDM 2019
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L'application SDM 2019 permet la mise en place d'un concours d'énigmes au sein d'un établissement scolaire (école primaire ou collège), pour la semaine des mathématiques, du 11 au 15 mars 2019. - Les participants (élèves, parents, adultes de l'établissement) téléchargent l'application ; - le professeur référent de l'action indique la (ou les) adresse(s) mail à utiliser pour envoyer les réponses ; - chaque jour à partir du 11 mars, une nouvelle énigme est déverrouillée : chacune des 5 énigmes se décline selon trois niveaux de difficultés, permettant la participation d'un maximum d'individus. Les participants travaillent directement dans l'application, puis génèrent une image de la réponse à proposer, qu'il suffit ensuite d'envoyer à l'adresse mail indiquée auparavant. - le professeur référent comptabilise ensuite les réponses en fonction du niveau de difficulté et établit ainsi un classement. - Une épreuve finale peut être envisagée pour départager les ex-aequo ! Plus d'informations sur le site mathématique de l'académie de Dijon : http://mathematiques.ac-dijon.fr/spip.php?article246
Verdict
The clearest difference is price: SDM 2019 at Free against Quadrillages's $4.99. SDM 2019 also leads on update cadence (fortnightly vs every 5 months) and iOS requirement (8.0 vs 15.6). On ads, in-app purchases 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
SDM 2019 is free to download; Quadrillages costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Quadrillages ships an update every 5 months, SDM 2019 fortnightly. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.
| Parameter | Quadrillages | SDM 2019 |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPad, Mac — better | iPad |
| Requires iOS | 15.6 | 8.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | CROMBEZ Emmanuel | Christophe Auclair |
In-app purchases
Quadrillages
No in-app purchases
SDM 2019
No in-app purchases
Questions
Is Quadrillages free?
Is SDM 2019 free?
Do Quadrillages or SDM 2019 have ads?
Which is updated more often, Quadrillages or SDM 2019?
Other comparisons
