Comparison

Black vs Référendum Citoyen

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

Head to head
About

Black

This app reopens unsolved cases and disappearances with daily investigations and witness appeals. Users can submit information directly to the editorial team and engage with a community of users. It offers a case map and notifications for updates.

Highlights
  • Daily featured investigations
  • Witness appeal submissions
  • Interactive case map
  • Community commenting and contributions
  • Case following and notifications
  • Multilingual support
Currently charting
Read full description

Black-Track, the media outlet that reopens unsolved cases. Cold cases, worrying disappearances, murders never solved: our editorial team investigates, publishes and follows every case. And because a single memory can change everything, Black-Track lets you pass on information in seconds. FRONT PAGE Every day, a featured investigation, the current appeals for witnesses and the week's publications. Explore cases by theme: disappearances, cold cases, murders, unidentified serial killers, family tragedies. THEY NEED YOU Appeals for witnesses are free to access. Listen to the voices of families and loved ones, read the descriptions and, if you know something, write directly to the editorial team. THE CASE MAP Browse cases on a globe, filter them by type and period, and discover those that happened near you. REPORTING IS FREE A long press on the Report button is all it takes to send information to the editorial team, by message, email or phone. In an emergency, the app reminds you to call your local emergency number. AN EDITORIAL TEAM THAT LISTENS Talk to the editorial team in the messaging, attach a photo, link your message to a case. AN ENGAGED COMMUNITY Comment on cases, reply to other members, add elements (photos, documents, recordings). Every contribution is checked by the editorial team before it is published. Comments are moderated. DON'T MISS A THING Follow the cases you care about and get a notification at every development: new publication, new element, audio appeal, case solved. You can also be alerted to new cases and to appeals for witnesses near you. IN 4 LANGUAGES The app is available in French, English, Spanish or Italian, depending on your phone. Comments and messages written in another language can be translated with a single tap. More languages are coming. THE BLACK-TRACK SUBSCRIPTION With a subscription, get the full case files and every update to the investigation, audio appeals for witnesses, case following and contributions. Two plans: monthly or yearly. Payment is charged to your Apple account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. You can manage and cancel it at any time in your Apple account settings. Terms of use: https://www.black-track.com/?p=cgu Privacy policy: https://www.black-track.com/?p=confidentialite Any questions? contact@black-track.com Some cases describe violent events and may upset sensitive readers.

About

Référendum Citoyen

This app allows French citizens to participate in and follow citizen consultations. It provides information on ongoing votes, explanations for each question, and real-time results. Participation requires a compatible biometric passport and NFC-enabled smartphone.

Highlights
  • Consult ongoing citizen referendums
  • Access consultation information
  • Participate in proposed votes
  • Track real-time results
  • View past referendum outcomes
  • Cryptographic verification for voting
Features
Read full description

Référendum Citoyen est une application permettant aux citoyens français de participer à des consultations citoyennes et de suivre leurs résultats. L’application présente les scrutins en cours, les informations associées à chaque consultation et les résultats publiés pendant la durée du vote. Pour participer à un scrutin, l’utilisateur doit disposer d’un passeport biométrique compatible et d’un smartphone compatible avec la lecture NFC. Fonctionnalités principales : • Consulter les référendums citoyens en cours • Accéder aux informations et explications associées à chaque question • Participer aux scrutins proposés dans l’application • Suivre l’évolution des résultats publiés pendant la durée du vote • Consulter les résultats des scrutins terminés L’application utilise des mécanismes cryptographiques destinés à vérifier l’éligibilité au vote et à limiter les votes multiples pour un même utilisateur. Référendum Citoyen est un projet porté par l’association Libérez-vous citoyens. Important : • Référendum Citoyen n’est pas un service gouvernemental. • Les scrutins organisés dans l’application ne constituent pas des référendums officiels au sens du droit français. Pour plus d’informations, consultez : https://referendumcitoyen.fr

Screenshots

Black4 screens
Référendum Citoyen4 screens

Verdict

The call

The clearest difference is price: Référendum Citoyen at Free against Black's $4.99. Référendum Citoyen also leads on in-app purchases (none vs 7) and update cadence (every 2 days vs every 5 weeks). Black's advantage is chart position (#139 vs unranked) and review sentiment (86% vs 76%). On ads, device support 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

CostPrice · In-app purchases · Ads · Monetization

Référendum Citoyen is free to download; Black costs $4.99 up front. Black sells 7 in-app purchases, starting at $3.99 per month. Référendum Citoyen asks for nothing beyond the download.

UpkeepUpdate frequency

Black ships an update every 5 weeks, Référendum Citoyen every 2 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 5 level
Black versus Référendum Citoyen: the parameters behind the verdict, then further details
ParameterBlackRéférendum Citoyen
Price$4.99Free — better
Rating—5.0 (1 ratings) — better
Positive reviews85.7% of reviews — better76.3% of reviews
Number of ratings—1 — better
Update frequencyEvery 5 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
Best chart rank#139 — better—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.416.0 — better
Further details — not scored
Size68 MB182 MB
Age rating12+4+
DeveloperBlack-TrackLiberez vous citoyens

Customer experience

Black

Written reviews42 reviews
Positive85.7%
Neutral2.4%
Negative11.9%

Référendum Citoyen

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews38 reviews
Positive76.3%
Neutral15.8%
Negative7.9%

In-app purchases

7 purchases

Black

Subscriptions2
  • BlackTrack Pro Monthly$3.991 Month
  • BlackTrack Pro Annual$44.991 Year
One-time5
  • Pack découverte$0.99
  • Pack Bronze$1.99
  • Pack Argent$2.99
Show 2 more
  • Pack Or$3.99
  • Pack Diamant$4.99
None

Référendum Citoyen

No in-app purchases

Questions

Is Black free?
Black costs $4.99, and also offers in-app purchases.
Is Référendum Citoyen free?
Référendum Citoyen is free to download, with no in-app purchases.
Do Black or Référendum Citoyen have ads?
Neither Black nor Référendum Citoyen shows ads.
Which is updated more often, Black or Référendum Citoyen?
Black ships an update every 5 weeks, and Référendum Citoyen every 2 days. Most recently, Black was updated on November 3, 2026 and Référendum Citoyen on October 31, 2026.

Other comparisons