Mobile App Custom Fields: Five Field Types That Stop Bad Data at the Door

Let me tell you what's really going on here: most bad follow-up is not a lazy team. It is bad data, typed into a plain text field, on a phone, in a parking lot. We've just added advanced mobile app custom fields to Rainmaker Reputation CRM: five new field types for contacts and opportunities that format and validate what your team captures, right where they capture it.

What are advanced mobile app custom fields?

Advanced mobile app custom fields are five new field types the mobile app now fully supports: URL, Date & Time, Time, User, and Rich Text. They replace plain text workarounds for data that was never plain text to begin with.

A website address becomes a clickable URL, not a mangled string. A team member becomes a real User assignment, with an avatar, not a misspelled name. Notes keep their rich text formatting — bolding and lists included.

Why does plain text on mobile cost you money?

It costs you because plain text accepts anything, including the mistake. The old way forced three leaks on every business whose team works away from a desk:

• 1. Broken links. A URL typed wrong is a dead end — for your team, and for the follow-up that was supposed to happen from it.
• 2. Wrong times and dates. No format, no limits, no working-day restriction. One bad entry and the scheduling built on top of it is wrong too.
• 3. Names nobody can find later. Misspell a team member's name in a text field and that contact might as well belong to nobody in your marketing technology for local business.

A plain text field will accept anything — including the mistake that costs you the job. Systems over people, period. Build the rule into the field and you stop depending on tired humans remembering it at 6 p.m. in the field.

What validation rules work on the mobile app?

The validation rules you configure on the web work on mobile too: the app enforces them and shows errors when an entry breaks them. Block unapproved domains in a URL field. Restrict a date field to working days. Hold times inside the ranges you set.

That consistency is the point: a CRM designed for client retention cannot run on contacts your team cannot trust. Desk or phone, all-in-one inbox or field, the standard stays the same.

Who is this best for — and who should skip it?

Best for: owners, consultants, and creators whose teams capture contact and opportunity data on phones — in the field, between appointments. It removes a daily source of cleanup work and strengthens the data your marketing automation runs on.

NOT for: a desk-only operation that rarely opens the mobile app — plain fields are not hurting you yet. The trade-off: validation only works if you configure it on the web first, and rules set too tight will block legitimate entries. Configure one field, test it, then expand.

How do you set it up on Monday morning?

1. Open custom field settings on the web and add a URL, Date & Time, Time, User, or Rich Text field to your contacts or opportunities.
2. Configure the validation rules for that field — approved domains, working days, time ranges — and save.
3. Open a contact or opportunity in the mobile app and tap the new field.
4. Enter the data. The app enforces your validation and shows an error if the entry breaks a rule.
5. Repeat for the one field your team mangles most often next — do not rebuild everything at once.

Your team is not careless. Your fields were. Your challenge: before Friday, convert the single most-abused plain text field on your contacts into its proper type, set one validation rule, and watch the cleanup work disappear.

P.S. Clean data compounds: every clickable link and correct date is one less missed follow-up. Garbage in was never a people problem. It was a field problem — and fields can be fixed.