Research answer
What AppTrendKit can say about Jokko9 today
Jokko9 has no estimate-backed download or gross-consumer-spend figure that meets the public evidence contract yet.
Observed App Store metadata, chart positions, and history are shown below. Missing, non-finite, undefined-currency, or undefined-metric evidence stays missing rather than becoming zero.
Performance intelligence
Observed trajectory and estimates
Store ranks are observations. Downloads and gross store consumer spend are AppTrendKit estimates and only appear when persisted evidence exists.
Estimated downloads · 30D
ModeledNo persisted estimate
The page does not turn missing evidence into zero.
Estimated App Store gross consumer spend · 30D
ModeledNo persisted estimate
The page does not turn missing evidence into zero.
Estimated downloads · 7D
ModeledNo persisted estimate
The page does not turn missing evidence into zero.
Estimated App Store gross consumer spend · 7D
ModeledNo persisted estimate
The page does not turn missing evidence into zero.
Evidence history
Collected daily performance
No daily metric history has been persisted yet.
Rank history
Observed chart positions
Lower rank is better. Only collected observations are shown.
Coverage note
What the ranks mean
A missing rank is not treated as zero downloads or zero revenue. Apple chart feeds are bounded and may return censored or not-ranked observations outside the visible chart depth.
Read the methodStorefront mix
Top countries by estimated contribution
Country estimates are aggregated only after country-level predictions exist.
Monetization
Observed store economics signals
These are listing and product observations. They are not company revenue, subscriber counts, or advertising revenue.
App details
Store metadata
- Version
- 1.0.1
- Released
- Sep 2, 2026
- Last updated
- Sep 5, 2026
- Content rating
- 4+
- Default storefront
- FI
Public IAP observations
Validated in-app purchase prices
Only persisted rows with an explicit public publication boundary are shown. Missing price, currency, country, or date values stay unknown.
Listing detail
What the store says
The Gambia is changing from 7-digit to 9-digit phone numbers. Every number saved in your phone needs the new operator prefix added — and if you have hundreds of contacts, doing that by hand is slow and easy to get wrong. Jokko9 does it for you. It scans your saved contacts, works out which operator each number belongs to, and shows you exactly what it will change before anything happens. You approve, and it updates them all at once. HOW IT WORKS • Africell numbers get the 87 prefix • QCell numbers get the 83 prefix • Comium numbers get the 86 prefix • Gamcel numbers stay 7 digits, as PURA specified • Anything unrecognised is flagged for you to check yourself COMPLETELY PRIVATE Jokko9 works entirely offline. There is no account, no sign-up, and no internet connection — your contacts never leave your phone. Nothing is uploaded, and nothing is tracked. YOU STAY IN CONTROL Review every change before it is applied, and keep a record of the original numbers. Built for Gambians, by Computer Science students at the University of The Gambia, following the official PURA migration rules. Published with the support of TeranGO.
Store creative
Screenshots
Competitive set
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Methodology and provenance
Read every number with its evidence
Metadata source: Apple iTunes Search API; observed Sep 7, 2026, 8:39 PM.
Rankings: collected chart positions from the listed storefront. Missing ranks are not zeros.
Economics: downloads and gross store consumer spend are estimated, not official Apple or publisher figures.
Model: No persisted model version.
Confidence: —; intervals widen when evidence or history is limited.
Last observation: Sep 7, 2026, 8:39 PM.
See how AppTrendKit separates observations, estimates, coverage, and confidence.
Open methodology