Comparison

Simplex vs Cobra

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Simplex

Features
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Simplex™ is a generic tool to support participative observation networks. The Simplex™ smart app is one component of a more complete observation system that, in addition to the app, comprises a webGIS interface and a database. The application allows you to do any kind of thematic observation by driving the observers step by step, through explicit icons, to the right observation item, and to finally declare it (with our without photo) with geographical and spatial stamp. Observers have access at any time and any location to environmental data for the last three days that are extracted on-demand from environmental databases. At each observation are attached selected environmental parameters that allows, at any time, to correlate some observations with environmental context. Simplex™ can host several observation networks, either of public type (i.e. open to anyone) or of private type. You can contract a license for a private one to create your own network. The license covers the configuration of the observation campaign (i.e. the selection and the hierarchy of icons and the required environmental parameters, if of interest to you). It also covers an access to a private webGIS that provides a synoptic view of the observation done by your network. Your data is kept safely on a private storage without any access by a third-party. Once created you can invite anyone you want to become an observer to your network. You can also easily change and adapt the icons at all time. The app allows on-line discussion (text) between network organizer and observers. Simplex™ app is available in several languages (Arabic, English, French, German, Italian, Norwegian and Spanish). Want to create your own network or need for more information? Please contact simplex@acri.fr

About

Cobra

Read full description

Take control of your lawn with Cobra. The smartest way to manage your robotic lawn mower.

Screenshots

Simplex4 screens
Cobra4 screens

Verdict

The call

The clearest difference is update cadence: Cobra at every 6 weeks against Simplex's every 4 months. Simplex's advantage is iOS requirement (9.0 vs 15.0). On price, 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

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

Simplex ships an update every 4 months, Cobra every 6 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 4 level
Simplex versus Cobra: the parameters behind the verdict, then further details
ParameterSimplexCobra
PriceFreeFree
Update frequencyEvery 4 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS9.0 — better15.0
Further details — not scored
Size34 MB63 MB
Age rating4+9+
DeveloperACRIHenton and Chattell Ltd.

In-app purchases

None

Simplex

No in-app purchases

None

Cobra

No in-app purchases

Questions

Is Simplex free?
Simplex is free to download, with no in-app purchases.
Is Cobra free?
Cobra is free to download, with no in-app purchases.
Do Simplex or Cobra have ads?
Neither Simplex nor Cobra shows ads.
Which is updated more often, Simplex or Cobra?
Simplex ships an update every 4 months, and Cobra every 6 weeks. Most recently, Simplex was updated on November 6, 2026 and Cobra on October 31, 2026.

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