Immerse vs Codex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Immerse
This app guides motivated learners through language and culture acquisition using immersive techniques. It provides tools to gather and review culturally informed language samples, taking users from beginner to intermediate proficiency. The app is designed for learners following specific curricula and offers guided instructions and self-study review features.
- Guided language learning instructions
- Upload photos for language helper interaction
- Record language helpers with photo attachments
- Review recordings during self-study
- Capture photos and notes from daily life
- Progress to intermediate language proficiency
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The Immerse app guides highly motivated language learners through the process of culture and language acquisition in an immersive context. This app provides instructions and tools that help users gather and review increasing complex, culturally informed language samples. The current version of Immerse takes learners from their initial forays into their target language to an intermediate level of language proficiency. Developed by a group of dedicated language learners in unique language contexts, Immerse helps make learning any language on earth an achievable task. Immerse is mainly for language learners following the Becoming Equipped to Communicate (BEC) curriculum for CLA. This app requires a paid subscription. This subscription allows you to: * Receive guided instructions from the first day of language learning. * Upload your own photos to facilitate learning with a language helper. * Record your language helpers with recordings attached to your photos. * Review your recordings during self-study. * Prepare for deeper levels of language learning by capturing photos and notes from daily life. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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.
- 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
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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
Verdict
The clearest difference is in-app purchases: Codex at none against Immerse's 2. Codex also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 80%). Immerse's advantage is device support (4 vs 1) and iOS requirement (15.0 vs 17.0). On price, ratings volume, update cadence and ads 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
Both are free to download. Immerse sells 2 in-app purchases, starting at $9.99 per month. Codex asks for nothing beyond the download.
Codex holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 24 and 13 respectively. Written reviews point the same way: 80% of Immerse's written reviews are positive against 100% of Codex's.
Immerse ships an update weekly, Codex every 5 days. The most recent releases landed on November 11, 2026 and November 10, 2026 respectively.
| Parameter | Immerse | Codex |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (24 ratings) | 5.0 (13 ratings) — better |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 24 — better | 13 |
| Update frequency | Weekly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 69 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Immerse Language & Culture | Missionary LLC |
Customer experience
Immerse
Codex
In-app purchases
Immerse
- Monthly Subscription7 Days trial$9.991 Month
- Yearly Subscription7 Days trial$99.991 Year
Codex
No in-app purchases








