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Mutter vs Hallow
We make Mutter, so we're biased. Here's an honest comparison. Mutter is a free iPhone prayer app made by an independent maker. Everything we say about Hallow is checked against its own pages and app store listings, dated 1 October 2026, and linked below.
Hallow is a large audio prayer app with a Catholic heart: over 10,000 guided sessions, the Rosary, Lectio Divina, sleep prayers and music, with a free version and a subscription. Mutter is a smaller, free app built around one habit: before the apps you choose open, it shows the verse or prayer you picked for today.
At a glance
| Feature | Mutter | Hallow |
|---|---|---|
| Price | Free. No ads, purchases, subscriptions or donations. | A free version, and a subscription: £9.99 a month or £69.99 a year on the UK App Store ($9.99 and $69.99 in the US; $119.99 a year for a family plan). App Store Hallow help |
| Platforms | iPhone XS or newer (iOS 17 or later). Free on the App Store. | iPhone, iPad, Mac, Android, Amazon devices and the web. Hallow help |
| Built around | App Guard: today's verse or prayer before the apps you choose, with drawings, widgets and a reading library around it. | Audio-guided prayer and meditation: over 10,000 sessions, Catholic in content. App Store |
| Ads | None. | Not flagged on its App Store listing. App Store |
| Account needed | Yes (Apple, Google or email), so your library comes back on a new phone. | Yes, even for the free version. Hallow help |
| Bible | The Berean Standard Bible, with study notes, plus the World English Bible and the King James Version. You can save verses from any translation. | A Bible tab with highlights, notes and bookmarks, and readings from the approved Catholic Bible. App Store |
| Audio | Listen to a calm voice read your verse or prayer, with soft music if you like. No guided meditations. | Its heart: sessions in three lengths, 50+ guides, music, sleep prayers, offline downloads. App Store |
| App Store rating | None yet. Mutter isn't on the App Store, so there are no ratings or reviews. | 4.9 from 8,340 ratings in the UK; 4.9 from 378,061 in the US. On Google Play, 4.4 from 124,000 reviews. App Store Google Play |
Hallow facts checked 1 October 2026, from the linked pages. Prices and ratings change; follow the links for today's.
Where Hallow is better
- Far more to listen to. Over 10,000 audio sessions, 50+ guides, sleep prayers, chant and music, and a choice of lengths for each prayer. Mutter has a handful of ways to pray one verse or prayer at a time.
- Real, well-known voices. Sessions are led by people like Jonathan Roumie and Fr. Mike Schmitz, and its home page invites you to join Mark Wahlberg. Mutter's listening uses a synthetic voice.
- Catholic depth. The Rosary, Divine Mercy Chaplet, Lectio Divina, the Examen, Mass readings, novenas, litanies, Bible in a Year and Catechism in a Year. Its content is reviewed by Church leaders.
- On almost every device. iPhone, iPad, Mac, Android, Amazon devices and the web, in seven languages. Mutter is iPhone only, in English.
- A generous free version and a big community. Daily prayers, the Rosary and Bible in a Year are free, and there are groups, prayer campaigns and seasonal challenges like Pray40 in Lent.
Where Mutter is different
- A prayer before your apps. App Guard shows the verse or prayer you chose for today before Instagram, TikTok or any app you pick. Say Amen and the app opens.
- Completely free. No subscription, no trial to remember to cancel, no ads and no donations.
- Broadly Christian. Mutter isn't written for one tradition. Its library is Spurgeon, articles from the great Christian books, hymns and historic prayers, with three Bible translations.
- Drawings of your words. Each verse or prayer you save gets its own paper-and-ink drawing, and it comes back to you through the day on widgets and reminders.
- Story. The Bible told as a timeline of posts, in everyday words, each linked to its verses.
What people say about Hallow
Across 150 recent App Store reviews (April 2025 to September 2026), two thirds were five stars. People love the range of Catholic prayer, Fr. Mike, and how easy it makes a daily habit. Most of the one-star reviews are about being charged for a full year after a free trial and finding refunds hard. Others say too little is free, dislike the AI narrator voices, or feel it's too US-focused. Some non-Catholics find it very Catholic, which is what it's for.
“it really makes it so easy to incorporate some meaningful prayer”
“very much an app for Catholics and not for Christians in general”
From Hallow's public App Store reviews, read 1 October 2026. Mutter is new, so it doesn't have many reviews yet.
Hallow's prices, from its own pages
Who should pick which
Pick Hallow if you're Catholic or love Catholic prayer, you like to listen, you want lots of guided sessions and sleep content, or you need Android, iPad or the web.
Pick Mutter if you want something that meets you when you reach for your phone, you'd rather not pay or subscribe, and you'd like a broadly Christian library to read. (Once it's on the App Store.)
Sources
- Hallow on the UK App Store (price, in-app purchases, description, languages, ratings, privacy label), checked 1 October 2026.
- Hallow on the US App Store (US ratings and prices), checked 1 October 2026.
- Hallow help: How much does the subscription cost?, checked 1 October 2026.
- Hallow help: What are the benefits of the paid subscription?, checked 1 October 2026.
- Hallow help: How do I access the free version?, checked 1 October 2026.
- Hallow help: Where to download the app?, checked 1 October 2026.
- Hallow on Google Play, checked 1 October 2026.
- hallow.com, checked 1 October 2026.
Hallow and its maker, Hallow, Inc., aren't connected to Mutter, and their names belong to them. Spotted something out of date or wrong? Email hello@trymutter.com and we'll fix it.