Comparison

Number Diner vs Codex

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

Head to head
About

Number Diner

Practice math skills like multiplication, addition, and division in a fun diner simulation. Manage your restaurant, create burgers, and keep your pantry stocked while the chef is away. Adaptive difficulty ensures a personalized learning experience.

Highlights
  • Diner simulation environment
  • Practice multiplication, addition, division
  • Manage ingredients and pricing
  • Create custom burgers
  • Adaptive math difficulty
  • Multiple avatars and outfits
  • User save slots
Read full description

The chef’s gone fishing. Your job? To keep things running while she's away! Number Diner is a math learning situated in a diner simulation environment. It provides the specific context of a burger diner in a 2D game environment where the math problems are derived from the game’s scenario. Buy ingredients, set your prices and sell burgers as you practice multiplication, addition and division within a meaningful context. -Create different burgers to satisfy all kinds of customers. -Keep your pantry stocked or you’ll miss sales! -Improve your diner with different upgrades. -Try on different outfits for your avatar . -Choose from over 8 different avatars. -Adaptive math difficulty responds to the player’s level. -4 separate user save slots. -iCloud enabled.

About

Codex

Discover unreached language groups worldwide and pray for them daily. This app provides profiles with descriptions, photos, and prayer points for people who cannot hear the gospel in their native tongue. Join a global community in a shared prayer rhythm.

Highlights
  • Daily prayer for one unreached language group
  • Detailed profiles with photos and prayer points
  • Explore hundreds of unreached language groups
  • Search and filter by language or country
  • World map visualization of language groups
  • Daily prayer reminders and streaks
Features
Read full description

Codex is a catalog of unreached language groups that includes a description, photographs, and prayer points. Those groups that have been verified by Missionary are part of the daily prayer rotation. Pray for the unreached, from Tajikistan to Papua New Guinea to the Amazon. Millions of people still cannot hear the gospel in the language of their heart. And yet, those who would bring the gospel have no knowledge of who those people are. Enter Codex. Codex is a digital repository of unreached language groups. It brings the knowledge of the unreached to the saints who can reach them. Each day, the app gives you one language group to pray for: who they are, where they live, what they believe, and how to pray for them. Profiles verified by Missionary’s team carry the stories, photographs, and prayer points. ONE GROUP A DAY Build a gentle daily rhythm. Join others praying with the app and lift the same group up on the same day. Enable a daily reminder at the time that works for you, and start a streak as you pray. HUNDREDS OF LANGUAGE GROUPS Beyond the verified profiles, explore hundreds of unreached language groups drawn from public missions data: groups with no gospel, no disciples, and no church in their own language. Search by language or country, filter to frontier groups, or browse by Bible translation status. SEE THE TASK ON A MAP A world map plots every group in the guide, from the Caucasus to the Sahel to the islands of Southeast Asia. Every dot is a people waiting to hear. WHY LANGUAGE? Churches often think in terms of geography or people groups, but the Bible calls us to reach every tongue. The app explains why we count the unreached by language: language marks exactly where a person can, and cannot, hear and read the gospel. FROM YOUR CHURCH TO EVERY LANGUAGE Codex is built by Missionary—helping local churches send missionaries to peoples who have never heard of Christ. Praying through this guide is the first step. “I make it my ambition to preach the gospel, not where Christ has already been named.” — Romans 15:20

Screenshots

Number Diner4 screens
Codex4 screens

Verdict

The call

The clearest difference is price: Codex at Free against Number Diner's $1.99. Codex also leads on rating (5.0 vs 4.6) and update cadence (every 5 days vs every 3 weeks). Number Diner's advantage is ratings volume (72 vs 13) and device support (3 vs 1). On review sentiment, ads and in-app purchases 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

Codex is free to download; Number Diner costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Codex holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Number Diner has 72 ratings behind it against 13, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Number Diner ships an update every 3 weeks, Codex every 5 days. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.

Scorecard7 real differences · 3 level
Number Diner versus Codex: the parameters behind the verdict, then further details
ParameterNumber DinerCodex
Price$1.99Free — better
Rating4.6 (72 ratings)5.0 (13 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings72 — better13
Update frequencyEvery 3 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS10.0 — better17.0
Further details — not scored
Size103 MB25 MB
Age rating4+4+
DeveloperIgnacio SchiefelbeinMissionary LLC

Customer experience

Number Diner

All ratings66 ratings
Positive89.4%
Neutral4.5%
Negative6.1%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Codex

All ratings13 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Number Diner

No in-app purchases

None

Codex

No in-app purchases

Questions

Is Number Diner free?
Number Diner costs $1.99, with no in-app purchases.
Is Codex free?
Codex is free to download, with no in-app purchases.
Which has better reviews, Number Diner or Codex?
Codex is rated higher. Number Diner averages 4.6 out of 5 from 72 ratings, while Codex averages 5.0 from 13 ratings.
Do Number Diner or Codex have ads?
Neither Number Diner nor Codex shows ads.
Which is updated more often, Number Diner or Codex?
Number Diner ships an update every 3 weeks, and Codex every 5 days. Most recently, Number Diner was updated on November 3, 2026 and Codex on November 10, 2026.

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